Anticheat is not working.

Duplicate of Reversed Strings

This is so clever!

this is neat. thanks.

Wow, & is a good use

"Take 2 strings s1 and s2 including only letters from a to z."

unpublished

I don't quite get it, can you explain it pretty please?

i like that you did that

Using the #sum method from Array is many, many times faster than using the alternative, inject or reduce.

If the resulting array is empty, calling first will yield nil, which needs to be converted into 0. This can be done either by using to_i or || 0.

Why would .to_i be necessary? The array consists of integers only.

"Take 2 strings s1 and s2 including only letters from a to z." It's defined in the instructions, so the tests are complete.

"but still this solution seems to be correct, because task guarantees that only letters will be passed in. solution does not have to check for non-letters."

That is fair I suppose.